Improvement in sash-fastener



".PETERS, PHOTWLrrHOGRAPHER, WASHINGTON. D. C.

Stimmt @tutti titties.,

4JOHN vREELAND BoGERT, or NEW YORK, N. Y., AND MTCHAEL R. PERKINS, on PORTSMOUTH, NEW HAMPSHIRE, ASSTGNORS To THEMSELvES AND JOHN E, LOWELL, OE BOSTON, MASSACHUSETTS.

IMPROVEMENT IN SASI-I-FASTENER.

Ilfhe Schedule referred to in these Letters Patent and making part of the Same To all whom it may concern:

Be it known that we, JOHN VREELAND BOGERT, of

the city, county, and State of N ew York, and MICHAEL R. PERKINS, of Portsmouth, in the county of Rockingham, and State oi' New' Hampshire, have invented a new and improved Sash-Fastener g and we do hereby declare that the following is a `full, clear, and exact description ofthe same, reference being hadto the accompanying drawings, making a part of this specification, in which- Figure 1 is a top view, and

Figures' and 3 are sections of one form of our invention; and

Figure 4 is a Section, and

Figure 5, a front view of another form OI' our invention.

The object of our invention is to provide a sashiastener, which will operate automatically, that is to say, one which will, of itself, fasten the sashes together when they are closed, by the mere operation oi shutting the window, and is an improvement upon the fastener. of J. J. Grook, patented April 8, 1856.

One form ot' our fastener is constructed with a metal box, made in two parts, (ly c, which is screwed on the outside sash, A, as shown in the drawings. In this borv is iittell a flat bolt, b, shown in section in figs. 2 and 3, and bvllotted lines in iig. l. Two spiral springs, s, servo to throw the bolt, and the knob c, atlixed to the holt through a Slot in the upper plate, u, serves to Tetract it. A spring, e, fastened to the bottom of the box, a, (inside,) projects beyond v the face of the sash, and has upon it a catch, l', which lits in anotch in the bolt b. On the innersash, B, iS a striker, 11., which is notched underneath, to receive the projecting end of the spring 0.

l When the sashes are apart, as shown in figs. l and' 2, the catchk is held, by the spring e, in the notch in the bolt b, retaining the bolt in that position; 'but when the sashes are brought together, as in fig. 3, the' striker 'n forces down the spring e, and relieves the catch 7tiifom its hold of the bolt, which is at once thrown forward by the action of the spiral springs,

tllus looking the sashes together.

, To open the window, the bolt is pushed back by means of the knob c, and the catch 7a made to engage with it, so as to holdit back.

Another and cheaper form of construction is shown in figs. 4 and 5, where We use a single block of metal,

m, in place of the box a af. The bolt b is round, fitted in `a` 'hole' bored or' cast in the block, and has a single spring behind it. The spring e is placed in a slot in the outside of the block, and the catch k passes through the block to enga-ge with the bolt b. l The knob c' is for the same purpose, and the mechanism is operated.

in the same way as in the construction previously mentioned.

The invention of Crook, above referred to, accomplishes all the Aresults which our invention ac comf plishes, but ours is very much less complicated, has fewer parts, is very much cheaper, and answers the purpose quite as well. l

We. do not claim broadly combining the bolt of a .window-latch with an engaging and disengagingoatch;

but

What we do claim, is-

Thc lsliding bolt and its spring, when arranged as f' 

